I started last year letting some go....Butia,FortxWag 7 Sabal and 2 Needle palms...all but one of the Sabal came back(actually they all did but one rotted from moisture in the growth point in spring)...unless I cut all the leaves off the 2 front Trachys they are to tall to cover with the resources I have...that said,I will see how they fair after 10F tonight(or so) and see if I have anything to put over them and also if I have any lights.